Overview
The PCA9535EMTTXG, produced by onsemi, is a 16-bit I2C and SMBus low-power I/O expander. This device is designed to provide an efficient way to expand the I/O capabilities of microcontrollers and other system masters. It features a low standby-current consumption, making it suitable for power-sensitive applications. The PCA9535EMTTXG is part of the PCA9535 series, known for its robust I/O expansion capabilities and flexible configuration options.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage - Max | 5.5 | V |
| Maximum Clock Frequency | 400 | kHz |
| Minimum Operating Temperature | -55 | °C |
| Maximum Operating Temperature | 125 | °C |
| Standby Current Consumption | 1 | μA |
| I/O Configuration | Input or Output | |
| I2C Addressing | Three hardware pins (A0, A1, A2) for up to 8 devices | |
| Interrupt Output | Open-drain active-low |
Key Features
- Low Power Consumption: The PCA9535EMTTXG has a low standby-current consumption of 1 μA max, making it ideal for power-sensitive applications.
- I2C and SMBus Compatibility: The device supports both I2C and SMBus protocols, allowing for flexible communication with the system master.
- 16-Bit I/O Expansion: It provides 16 bits of I/O expansion, divided into two 8-bit ports, which can be configured as inputs or outputs.
- Open-Drain Interrupt Output: The device features an open-drain active-low interrupt output that indicates changes in the input state.
- Power-On Reset: The PCA9535EMTTXG includes a power-on reset feature that initializes the device to its default state upon power-up.
- Flexible Addressing: Three hardware pins (A0, A1, A2) allow for programming the I2C address, enabling up to eight devices to share the same I2C bus or SMBus.
Applications
- Industrial Automation: The PCA9535EMTTXG can be used in industrial automation systems to expand the I/O capabilities of control units and sensors.
- Consumer Electronics: It is suitable for consumer electronics such as smart home devices, where low power consumption and flexible I/O expansion are crucial.
- Automotive Systems: The device can be applied in automotive systems for expanding the I/O of control units and other automotive electronics.
- Medical Devices: Its low power consumption and robust I/O expansion capabilities make it a good fit for medical devices that require reliable and efficient I/O management.
Q & A
- What is the maximum supply voltage for the PCA9535EMTTXG?
The maximum supply voltage is 5.5 V.
- What is the maximum clock frequency supported by the PCA9535EMTTXG?
The maximum clock frequency is 400 kHz.
- What is the operating temperature range for the PCA9535EMTTXG?
The operating temperature range is from -55°C to 125°C).
- How many bits of I/O expansion does the PCA9535EMTTXG provide?
The device provides 16 bits of I/O expansion, divided into two 8-bit ports).
- Can the PCA9535EMTTXG be used with multiple devices on the same I2C bus?
- What type of interrupt output does the PCA9535EMTTXG have?
The device features an open-drain active-low interrupt output).
- How does the power-on reset feature work on the PCA9535EMTTXG?
The power-on reset feature initializes the device to its default state upon power-up, resetting all registers and the I2C/SMBus state machine).
- What is the typical standby current consumption of the PCA9535EMTTXG?
The typical standby current consumption is 1 μA max).
- Can the PCA9535EMTTXG be used in industrial automation systems?
- Is the PCA9535EMTTXG compatible with both I2C and SMBus protocols?
